Title
A note on multiple exponential sums in function fields.
Abstract
Let A=Fq[t] denote the ring of polynomials over the finite field Fq. We denote by e a certain non-trivial character of the field of formal power series in terms of 1/t over Fq. For a monic g∈A and a polynomial G(x1,…,xd)∈A[x1,…,xd], we define S(G;g)=∑xe(G(x)/g) where x runs over (A/(g))d. In this paper, we prove that if G(x1,…,xd) is a homogeneous polynomial of degree k and if the g.c.d. of g and the coefficients of G is 1, then S(G;g)≪〈g〉d−12k+ϵ, where 〈g〉=qdegg and ϵ is a small positive constant.
Year
DOI
Venue
2012
10.1016/j.ffa.2011.06.003
Finite Fields and Their Applications
Keywords
Field
DocType
11T23,11T55
Discrete mathematics,Combinatorics,Finite field,Exponential function,Algebra,Polynomial,Formal power series,Monic polynomial,Homogeneous polynomial,Mathematics
Journal
Volume
Issue
ISSN
18
1
1071-5797
Citations 
PageRank 
References 
1
0.63
0
Authors
1
Name
Order
Citations
PageRank
Xiaomei Zhao111.30